Celtic Raven Bird Sterling Silver Black Crystal Ring(Sizes 5,6,7,8,9,10,11,12,13,14) Raven is 17mm (11/16") Wide and the Band Tapers to 3mm (1/16") Wide Six Black Crystals are 1mm in Diameter Weight is Around 5.3 - 6.3 Grams Nickel Free Steling Silver Marked .925 Raven with Celtic Knotwork and Set with Black Crystals